393411868 has 24 divisors (see below), whose sum is σ = 694197504. Its totient is φ = 195076800.

The previous prime is 393411857. The next prime is 393411881. The reversal of 393411868 is 868114393.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351646 + ... + 352762.

It is an arithmetic number, because the mean of its divisors is an integer number (28924896).

Almost surely, 2^393411868 is an apocalyptic number.

It is an amenable number.

393411868 is a deficient number, since it is larger than the sum of its proper divisors (300785636).

393411868 is a wasteful number, since it uses less digits than its factorization.

393411868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773 (or 1771 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 393411868 is about 19834.6128774927. The cubic root of 393411868 is about 732.7387383197.

It can be divided in two parts, 39341 and 1868, that added together give a square (41209 = 203²).

The spelling of 393411868 in words is "three hundred ninety-three million, four hundred eleven thousand, eight hundred sixty-eight".